Which is more famous, Yin and Yang, Feng Shui and Zhouyi?

Beginners, especially young people, should not learn the metaphysical part of Yi-ology directly. I recommend reading the original Book of Changes first, and then the Ten Wings annotated by Confucius and his disciples, namely, Yi, Xiang, Classical Chinese, divination, preface and postscript, and miscellaneous divination. (Now in most versions of Zhouyi, Xun and Xiang are placed directly after the divinatory symbols. ) mainly from the perspective of humanity. If you want to learn well and take the right path, you must first read the original text and even recite it! Never aim too high for physiognomy, geomantic omen and divination! This is my experience in recent years, but also the warning of my predecessors! In addition, I recommend nan huaijin's The Book of Changes and The Book of Changes. These two books are widely quoted, and they also mention a lot of metaphysical things.